Very rare. This is the first published work of Moresini of Aberdeen (Scotland). It is dedicated to James VI and is directed as an attack against alchemists and astrologers. Moresini did not believe in the transmution of one metal to another or the influence of the Sun or planets on metals here on earth. The author's principal patron was the Earl Anthony Bacon, the brother of Francis Bacon, who also maintained a correspondence with him. This work mentiones the minerals and their preparations used by the alchemists.